Salk vaccine

Oral polio vaccine-associated paralysis in a child despite previous immunization with inactivated virus

Vaccine-associated poliomyelitis caused by the oral poliovirus vaccine is rare, but its occurrence in a healthy, immunocompetent 6-month old child was highly unusual because the child had been previously immunized with two doses of the injected, inactivated poliovirus vaccine (IPV). The three poliovirus vaccine strains developed by Albert Sabin (OPV, oral poliovirus vaccine) contain mutations which prevent …

Oral polio vaccine-associated paralysis in a child despite previous immunization with inactivated virus Read More »

India has been free of polio for three years

Three years ago today, on 13 January 2011, the last case of poliomyelitis was reported in India. This achievement represents a remarkable turnaround for a country where control of the disease had for years been extremely difficult. As recently as 2009 there were 741 confirmed cases of polio caused by wild-type virus in India. Being …

India has been free of polio for three years Read More »

Scroll to Top